Improvement in treadles



UNITED STATES PATENT CEEICE.

JOSEPH LEE, OF VEST CHESTER, PENNSYLVANIA.

IMPROVEMENT IN TREADLES.

Specification forming part of Letters Patent No. 152,131. dated June 16, 1874; application tiled Api-i1 18,1874.

To all whom it may concern:

Be it known that I, JOSEPH LEE, of West Chester, Chester county, Pennsylvania, have invented a new and Improved Sewing-Machine lTreadle, of which the following is a specification:

The invention will rst be fully described, and then pointed out in the claim.

Figure l is a front elevation of my improved' treadle; and Fig. 2 is a section on the line w a?, Fig. l.

Similar letters of reference indicate corresponding parts.

A and B represent the two treadles arranged side by side, and mounted on the shaft O, so as to turn loosely on it. D is a rock-lever of peculiar shape, pivoted at its middle on a pivot, E, in the center-piece J, which separates the two treadles, the rock-lever heilig parallel. with ends to allow the inner portion to fall when the treadles go down far enough to allow the treadles to fall to the extent which is required without striking the arms.

By this sim ple arrangement the walkin ganotion treadle is rendered practical in a cheaper construction than any heretofore made.

I am aware that a eentrally-pivoted rocklever has been operated alternately by two treadles, pivoted at the heel or resting upon a sprin at that point; but mine are pivoted at the center, and the lever at its ends in the tlanges a b of treadles. In those cases the toes alternately operate the crank-rod, .while in mine the heel or toe may either be employed; moreover, they use reacting spriu gs, wi th which I am enabled to dispense altogether.

Having thus described my invention, what I claim is- The combination of the treadles A B, having flanges al b, and centrally pivoted on the same shaft O with centrally-t'ulerumed lever D, whose ends slide in sockets of the flanges a b, as and for the purpose described.

JOSEPH LEE.

Witnesses: i

S. ALrHoNso KIRK, WM. K. TEORP. 

